# Bridging the Air Gap: Secure Cloud SIEM Integration for Operational Technology

- Link: https://www.agilicus.com/webinar/2026-08-13_secure-cloud-siem-integration-for-operational-technology/
- Published: 2026-08-13T13:43:47+00:00
- Author: aman bhogal

# Bridging the Air Gap: Secure Cloud SIEM Integration for Operational Technology

Operational organizations often struggle with a fundamental conflict: they must 
maintain strict security isolation for safety and process integrity, yet they require
centralized visibility to protect against sophisticated cyber-physical threats. 
The traditional air gap is a double-edged sword. It keeps unauthorized actors out,
but it leaves your security operations completely blind.

Your Operational Technology network runs things like SCADA, HMI, Historian. It has
a highly restrictive firewall preventing outbound traffic. Your organisation is 
adopting a cloud-based SIEM as a best practice for visibility. How do you bridge
this gap?

Modern security operations rely on cloud-native Security Information and Event Management
platforms, such as Microsoft Sentinel or Google SecOps. These systems demand outbound
internet access and modern cryptography that isolated industrial environments deliberately
block. We believe identity is the new air gap. In this webinar, we will show you
how to resolve this tension.

You will learn to stream logs from isolated systems to cloud platforms securely,
without modifying firewalls, adding inbound rules, or establishing unfettered outbound
internet access. Join us to discover how to modernize your industrial security monitoring.

### Event Outline & Agenda:

 * _The Visibility and Detection Mandate_
 * _Why Cloud Security Architecture Fails in Operational Technology_
 * _The Practical Reality of Operational Technology Log Sources_
 * _Legacy Syslog vs SaaS-Native SIEM_
 * _Navigating the Purdue Model and Internal Firewalls_
 * _The Pitfalls of Traditional Workarounds_
 * _Secure Outbound Log Streaming Without Perimeter Modification_

## **Webinar Highlights **

### The Speaker

[⌊don-bowman⌉⌊don-bowman⌉[

#### **Don Bowman, CEO at Agilicus**

Founder and CEO of Agilicus, Don Bowman is an expert in cloud, security, and networking
with 30 years of experience in global Internet, technology, public policy.

Your Operational Technology network runs things like SCADA, HMI, Historian. It has
a highly restrictive firewall preventing outbound traffic. Your organisation is 
adopting a cloud-based SIEM as a best practice for visibility. How do you bridge
this gap?

You cannot protect what you cannot see. The National Institute of Standards and 
Technology emphasizes this mandate in its [Special Publication 800-82 Revision 3](https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-82r3.pdf),
highlighting continuous visibility as a necessity for critical infrastructure. In
modern industrial operations, waiting for physical process anomalies to manifest
is a recipe for catastrophic failure. However, the operational reality on the plant
floor is fraught with technical friction.

The physical isolation that protects process uptime prevents you from streaming 
critical logs to modern platforms. Cloud-native security platforms require mutual
Transport Layer Security, dynamic IP addressing, and complex OAuth2 flows. As a 
result, standard cryptographic validation fails completely when an isolated network
lacks Network Time Protocol synchronization. Your legacy supporting equipment, programmable
logic controllers, and human-machine interfaces generate unconnected, unencrypted
Syslog over User Datagram Protocol port 514. Sending this raw data directly to the
public internet is an operational risk.

Historically, organizations attempted to solve this protocol mismatch with complex
self-hosted servers or by punching holes in their firewalls. This creates permanent
outbound paths that attackers exploit for data exfiltration. If you rely on these
workarounds, your internal micro-segmentation becomes a liability, and your perimeter
firewalls will have so many holes that Swiss cheese will be jealous. Furthermore,
this directly violates the [Cybersecurity and Infrastructure Security Agency performance goals](https://www.cisa.gov/cross-sector-cybersecurity-performance-goals)
for secure log collection.

This webinar demonstrates how the [Agilicus AnyX Zero Trust platform](https://www.agilicus.com/brochures/agilicus-anyx-brochure/)
resolves this engineering challenge. By establishing outbound-only reverse tunnels,
the platform acts as a secure local ingestion point. It collects legacy Syslog locally,
translates it into SaaS-native, encrypted JSON payloads, and ensures safe firewall
traversal.

## LEARN MORE ON THE TOPIC

Transforming Industrial Connectivity into Identity-Governed Compliance – Bridging
the Accountability Gap with Layer 7 Identity-First Access

[WHITE PAPER](https://www.agilicus.com/transforming-industrial-connectivity-into-identity-governed-compliance/)

BOOK A MEETING

Ready To Learn More?

Agilicus AnyX Zero Trust enables any user, on any device, secure connectivity to
any resource they need—without a client or VPN. Whether that resource is a web application,
a programmable logic controller, or a building management system, Agilicus can secure
it with multi-factor authentication while keeping the user experience simple with
single sign-on.

[BOOK A MEETING](https://www.agilicus.com/book-calendar-meeting/)

![Agilicus AnyX platform logo, horizontal orientation.](https://www.agilicus.com/
www/9f758437-agilicus-logo-horizonta.svg)

info@agilicus.com, +1 ‪519 953-4332‬

300-87 King St W, Kitchener, ON, Canada. N2G 1A7

[⌊partner⌉⌊partner⌉[